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Letlw's Patent No. 101,742, Intell April`12, 1870.

TREMOLO ATTACHMENT FOR REED OR PIPE-ORGANS.

The Schedule referred to in these Letten Patent and making part of the same.

To all persons to who-m these presents may come:

Be it known that I, MICHEAL J AMES KERIGAN, of Boston, of the county of Suffolk and State of Massachusetts, have invented a new and useful Tremelo Attachment for Reed or Pipe-Organs; and do hereby declare the same to be fully described in the following spe'iiication and represented in the accompanying drawings, of Which- Figure 1 is a top view;

' vFigure 2, a longitudinal sect-ion; and

Figure 3, a 'transversel section of it.

ln suchjdrawings- A represents a close box or chamber, having ,two openings, a b, through its bottom. Such -box or chamber is to be sc conuected with the reed-chambers of a reed-organ that the wind, after being drawn by the bellows through any reed-opening and chamber, shall be caused, in its passage from the reed-chamber to the bellows, to pass up through the opening a', thence through the chamber A and thence out of the opening b.

The said opening a is to be conical or a spherical section, to operate as a seat for alight ball or sphere, B, which is to rest in and upon the seatin manner as represented, the seat bein g cushioned or covered around its periphery with a layer of cloth or other proper material.

A wire or spring, C, is arranged underneath the ball B. and in other respects in manner so as to enable a performer on the instrument to raise the ball by such Wire or spring off its seat, as occasion may require.

This ball will serve not only the purpose of a valve, but may be caused to act as a iremolo, as the player, by pressing up the ball a little, will enable the current of air to keep the ball in vibration vertically on its seat, in a manner to effect the desired tremolo sound of the reed or reeds.

The cover or top of the box A should be so arranged as to prevent the ball from being thrown out of its seat.

I find the ball-tremolo attachment far superior in several respects to the common valve-tremolo.

I claim as my invention- The combination and arrangementof the ball B, the box-conduit A, and the ball-lifter, substantially as described, the whole constituting a tremolo attachment for reed-organs or other-musical instruments.

Witnesses: MIGHEAL JAMES KERIGAN.

R. H. EDDY, J. Rf. SNOW. 

